. Electric railway journal . up-ward, warming thesand in preparationfor drying. In or-der to prevent thewet sand from packing in the hopper the side walls arespread so that the bottom is about 2 in. wider than thetop. In addition some adjustment of the sloping sidewalls is provided by adjusting screws on the front sideof the hopper. The hopper holds about y$ cu. yd. of sand and willdry two and one-half charges in nine hours. The cur-rent consumption is 16 amp. at 550 volts or cost of power is 1 cent per kilowatt-hour so thatthe rate for drying the sand electrically is 47Mj centsper
. Electric railway journal . up-ward, warming thesand in preparationfor drying. In or-der to prevent thewet sand from packing in the hopper the side walls arespread so that the bottom is about 2 in. wider than thetop. In addition some adjustment of the sloping sidewalls is provided by adjusting screws on the front sideof the hopper. The hopper holds about y$ cu. yd. of sand and willdry two and one-half charges in nine hours. The cur-rent consumption is 16 amp. at 550 volts or cost of power is 1 cent per kilowatt-hour so thatthe rate for drying the sand electrically is 47Mj centsper cubic yard. The sand stove previously used cu. yd. and required 275 lb. of soft coal to dry onecharge. At $ per ton the cost of drying sand bythis method was $ per cubic yard. In addition tothe necessity for tending the fire there was a furtherlabor cost of screening the sand after it has been the electric dryer this is taken care of advantage of the electric dryer is that the tem-. CROSS-SECTION OF ELECTRICAL SANDDRYER
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